If DR's of a line are (2,−a,3) and DC's are (b,12,c), then a2c2−b2a2b2−c2=

If DR's of a line are (2,−a,3) and DC's are (b,12,c), then a2c2−b2

1.	If DR's of a line are (2,−a,3) and DC's are (b,12,c), then a2c2−b2a2b2−c2=
Answer» If DR's of a line are $(2, - a, 3)$ and DC's are $(b, \frac{1}{2}, c),$ then $\frac{a^{2} c^{2} - b^{2}}{a^{2} b^{2} - c^{2}} =$